Chester was an intimidating, imposing man with broad facial features, great musculature, a mop of wavy light-coloured hair and a noticeably ugly scar that covered his right eye and right side of his face. He had a metal prosthetic arm in place of his right arm.
He saved Eva from a bunch of normals when she was younger. Since then, he treated her like a surrogate daughter.
As an A/0 rank Twilight, Chester was undoubtedly a powerful combatant, being able to outclass Spas and even match Striker and Beretta before being overwhelmed when Spas started helping them out. He had impressive strength and durability and could deal severe blows with his metal prosthetic right arm.